Tudor · Black Bay One
Strap for Black Bay 31 S&G / Champagne - Diamond / Bracelet
Takes 16 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Straps for the Black Bay One 79603-0008 (aka: M79603-0008)
Selected for the 16 mm lug width
The Black Bay One 79603-0008 (aka: M79603-0008), seen from the bench
Frequently asked questions
What is the lug width of the Tudor Black Bay One 79603-0008?
The lug width of the Tudor Black Bay One 79603-0008 is 16mm. This dimension is determined by the space between the two pins (lugs) on which the strap attaches. To verify, place a ruler between the lugs: it must measure exactly 16mm. This model features the same width on both ends, simplifying compatibility with aftermarket straps.
What is the best strap for the Tudor Black Bay One 79603-0008?
The best strap depends on usage and aesthetic preference. For absolute elegance, dark brown or black alligator is the reference choice: noble leather, distinctive natural pattern, harmonious ageing. For sustainability, vegetable-tanned calf in cognac tones amplifies the warmth of the yellow gold. For sporting versatility, a black rubber strap or chambray NATO offers immediate practicality without compromising the watch's refinement.
How do you change the strap on a Tudor Black Bay One?
Changing the strap requires extraction of the pins (small metal elements securing the strap to the lugs). Use a dedicated pin removal tool to avoid damaging the case. Position the watch on a stable surface and gently push the pin from the opposite side until it emerges completely. Remove the old strap, align the new strap's holes with the lugs, and reinsert the pin until fully secured. If inexperienced, consult a qualified watchmaker.
Is there an aftermarket strap compatible with the 79603-0008?
Yes, all straps certified for 16mm lug width are compatible. Milano Straps offers an extensive range of aftermarket straps in noble materials (alligator, vegetable-tanned calf, rubber, NATO), customizable in size, initials and thread colour. Straps are available for immediate shipment, with bespoke options through the Casati Milano atelier for those seeking exclusive colour choices or custom finishes.
How long does a leather strap last on this watch?
Durability depends on material and frequency of use. A quality alligator or calf strap, with moderate daily wear, typically lasts 3–5 years before showing wear signs. Leather is a living material: it absorbs moisture, develops natural patina and adapts to the wrist over time. To extend lifespan, avoid prolonged exposure to water, extreme humidity and direct UV radiation. With proper care, many premium leather straps exceed five years whilst maintaining functionality and aesthetic appeal. Milano Straps provides straps with an 18-month warranty and flexible replacement service.
The next step
The right strap isn't chosen. It is built, together.
From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only

